(a) Number of bulbs sold on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, and Sunday are \(12, 16, 8, 10, 14, 8\), and \(18\) respectively.
(b) The maximum numbers of bulbs (i.e., \(18\)) were sold on Sunday.
(c) Equal numbers of bulbs (i.e., \(8\)) were sold on Wednesday and Saturday.
(d) The minimum numbers of bulbs (i.e., \(8\)) were sold on Wednesday and Saturday.
(e) Total bulbs sold in the week = \(12 + 16 + 8 + 10 + 14 + 8 + 18 = 86\)
Since one big carton can hold 9 bulbs, we would require
⇒ \(\frac{86}{9}\) ≈ 10 cartons
∴ 10 cartons were needed in the given week.